Murder to the Tune of the Seven Black Notes

In 1959, in Florence, the girl Virginia sees her mother committing suicide jumping off a cliff in England. Twenty-eight years later, Virginia Ducci is married with the wealthy Francesco Ducci. Out of the blue, Virginia has a vision of a walled dead woman and when she goes to his house in Italy, she sees the wall of her vision. She opens a hole in the wall and finds a skeleton inside. When her husband returns from London, he is arrested and becomes the prime-suspect since the woman was his lover. Virginia discusses the subject with her psychiatrist and friend Luca Fattori. They find differences between her vision and the location where the skeleton was found and Luca suspects that she might have had a premonition. Virginia decides to investigate the case to find evidence to prove the innocence of Francesco and she suspects that a man called Emilio Rospini is the killer. When Francesco is released from jail, she becomes obsessed to find the truth and does not stop to snoop around. What will happen to her?